America's most challenging high schools

America's Most Challenging High Schools ranks schools through an index formula that's a simple ratio: the number of Advanced Placement, International Baccalaureate and Advanced International Certificate of Education tests given at a school each year, divided by the number of seniors who graduated that year. A ratio of 1.000 means the school had as many tests as graduates.
National Rankings
Get Challenge Index scores for more than 1900 public high schools nationwide, as ranked by The Post's Jay Mathews.
D.C. Area Rankings
See Challenge Index scores for more than 170 Washington-area public high schools, as ranked by The Post's Jay Mathews. Read more...